my Garmin 570 overwrites Index Sleeping Monitor Stress data after activating blue tooth Garmin 570.

my Garmin 570 overwrites Index Sleeping Monitor Stress data after activating blue tooth Garmin 570. I take the watch of at nights and track with the index sleeping monitor my stress and sleep. I turn blue tooth of, and wait till the sleep monitor send all data to the garmin conncet. but the last two mornings, after transfer the data from sleep monitor to the app, and reconnect the watch with blue tooth, the data was overwritten by the watch (with no stress data) thats very frustrating. Can the data retrieved from the sleeping monitor?